Knife



H. E. HARSON Aug.V 30,' 1949.

KNIFE Filed Feb. 18, 194e i 1N VL'N TOR.

Patented Aug. 30, 1949 o se kThis invention relates toi knives, ytheprim-ary J' other, jtoaccomrnodate the circular studs lll that object ofthe invention being to .provide a knife extendfrerngtheghead ll oithebladelZ. y Y Y wherein the blade thereof, moves longitudinally'cffz-Alsoymounted withinA the opening of the handle, the handle, when itis retracted orextendedthe isa lever; l-rgwhicheembodies. alengthj ofspring movement of the blade being controlled by thesteelorfotherFsuitable materiaL-,the width-of the manner in which theknife is held in the hand of lever being such thatgit will rest en -theplate 1 the operatorythat is -to say, if the blade is to be adjacentthereto., As shown, the ends OfI-Ythe extended, the handle is held withthe open end lever I3 arev reduced and extended atvright angles, down,to allow the blade to gr-avitate therefrom, providing stops i4, whichstops are adapted to elle and if the blade. is to be retractedftheYhandle iS I.1Q gage the stud l disposed on the side of the blade, heldso that the blade will gravitate to its posiwiththef-levervl; tohold theblade in itsl extend.-

tion within the handle. ed or retracted position. Y f Y An importantobject of the invention is tov pro- .f Asa clearly shown by Fig. 2;ofthe drawing', -a vide a knife of this character which will be sebutton|5'is secured to the lever, at a point intercurely held in either itsextended or retracted p omediate its ends,' the button extending throughsitions, the blade-holding lneans constituting Ia thepsopening; Hiformedin the handle,sojthat' it flexible arm which may -be readily operated tomay be engaged by the thumb of the person using disengage the blade topermit of the movement the knife, to operate the lever. The lever I3 isof the blade into and out of the handle. bowed at a point intermediateits ends, so that With the foregoing and other objects in view when thebutton l5 is pressed, the-ends of the which will appear as thedescription proceeds, lever, are tilted upwardly until the stops Ittherethe invention consists of certain novel details of of disengage thestud I0. This releases the blade construction and combinations of partsVhereinfor movement longitudinally of the handle, Vand after more fullydescribed and pointed out in the if it is desired to extend the blade,the handle will claims, it being understood that changes may be be heldwith the open end down, whereupon the made in the construction andarrangement of blade will gravitate to its open position.

parts without departing from the spirit of the in- 'Y When the blade isin its open position, the stop vention as claimed. I4 adjacent to theopen end of the handle will Referring to the drawing contact the studVIU'holding the blade in its eX- Figure 1 is a side elevational view of aknife 30 tended position, the'stud engaging the walls of constructed inaccordance with the invention. Y the elongated openings of the plates l.When it Figure 2 is a longitudinal sectional view is desired to retractthe blade, the button VI5 is through the knife with the blade retracted.pressed causing the ends of the lever i3 to move Figure 3 is alongitudinal sectional View to the dotted line positions as shown byFig. 2 oi 'through the knife taken at right angles to Fig. 2. 35 thedrawing, The handle is 110W held With the Figure 4 is a sectional viewtaken on line 4 4 open end up, whereupon the blade will move into ofFig. 3. the handle by gravity.

Referring to the drawing in detail, the knife It might be further statedthat the platesy 1 are handle is indicated generally by the referenceformed with reducedends Il which are bent into character 5, the knifehandle being pro- 40 engagement with each other, pwvdrlg a loop I8 videdwith a central longitudinal opening extendltO Which a Suitable Silap OlCarrying Chain may ing throughout the length of the hand1e, be'extended,should it be desired to carry the v The longitudinal opening of thehandle is prefkmfe 1n thls manner- From the foregoing it will bev seenthat due to the Sha e of the inner end of the knif b1 d I I 45 theconstruction shown and described, I have p e a e 2 provided a kn1fewhich when gripped and the gilclohaialigngumr as clearly shown by buttonI5 pressed in a manner as described, will v cause the blade to bereleased so that it may be Pos1tioned W1th1n the opening of the knlfereadily extended` This operation can be Q handle and Secure@ thereto bymeans f the pms complished with one hand, and the blade extend- 6, areplates 1 whwh plates have then" forward eder retracted by tilting thehandle, es .previousends extended laterally as at 8 where they over- 1ydescribed, 16m-ing the other hand free,

lie the ends of the handle 5. These plates l are what is Claimed is;

formed with elongated openings 9, these openings 1. A knife embodying ahollow handle, guide of the plates 1 being disposed opposite to each 55plates within the handle, said guide plates being erably rectangular information, to conform yto the guide plates engaging one Her the studsofthe 10 blade for restricting movement of the blade, and means forexing the spring lever intermediate its ends moving the ends of saidlever outwardly,

disengaging the stud and permitting movement of the blade longitudinallyof the handle.

2. A knife embodying a hollow handle, spaced guide plates disposedwithin the handle, said guide plates having elongated openings, a knifeblade disposed between, the guide plates, studs on the knife blade, saidstuds being disposed within the elongated openings of the plates forguiding the blade in its movements longitudinally of thethandle, aspring-operating-lever disposed within the handle between one of theplates and the handle, reduced inturned end members on the lever, thereduced end members being extended through the elongated openings in oneof said guide plates, one of the inturned end members engaging one ofthe studs of the blade for normally holding the blade within the handle,the opposite end member lying in spaced relation with one end wall ofthe elongated opening, and adapted to engage the other one of said studsforcing the stud into engagement with Vthe end wall, to restrict outwardand inward movement of the blade, and means for moving the operatinglever to disengage the studs and release the blade for movementlongitudinally of the handle.

3. A knife embodying a hollow handle, guide plates mounted within thehandle and disposed in spaced relation with respect to each other, saidguide plates having openings elongated longitudinally thereof, a blademovable between the guide plates, studs on the blade, said studs beingdisposed within `the elongated openings of the guide plates, a springlever curved intermediate its ends, tted within the handle and restingon one of the guide plates, extensions at the ends of the lever andbeing disposed within the opening of one of the guide plates and adaptedto engage one of the studs of the blade restricting movement' of theblade within the handle, said handle having an opening intermediate itsends, a button connected with the lever intermediate its ends andextending, through the opening to be engaged by the operator in forcingthe intermediate portion. of the lever inwardly, whereby the ends ofsaid lever are moved away from the blade `to disengage the stud of theblade with whichit-.engages HOWARD E. HARSON.

REFERENCES CITED The following references are of record in the ille ofthis patent:

UNITED STATES PATENTS Number Name Date 1,853,672 Dodson Apr. 12, 19321,906,573 Gits May 2, 1933 2,141,061 Dodson Dec. 6, 1937

